KaiMail vs Relais
| KaiMail | Relais | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | ¥550/mo | — |
| Open source | No | No |
| Platforms | api, Web | Web |
| Free plan | Yes | Yes |
| Custom domain | Yes | Yes |
| Multiple recipients | Yes | — |
| Outbound or reply mail | Yes | Yes |
| Delivery logs | Yes | Yes |
| Catch-all forwarding | — | Yes |
Both are listed in Best Email Forwarding Services. On Freedom251, KaiMail scores higher on our published basis.